A　multi-scale　method　combining　the　finite　volume　model　(FVM)　considering　Darcy-Brinkman　formulation　with　grand　conical　Monte　Carlo　(GCMC)　is　built　to　study　the　process　of　CO2　adsorption　in　13X　zeolite　particle　bed.　The　saturation　adsorption　capacities　and　adsorption　heat　in　FVM　method　are　calculated　by　Langmuir　model　and　linear　fitting　formula,　respectively.　The　GCMC　method　is　used　to　obtain　the　parameters　of　Langmuir　model　and　linear　fitting　formula.　The　multi-scale　method　overcomes　the　shortcomings　of　the　saturation　adsorption　capacities　restricted　by　level　of　experimentation　or　empirical　formula.　The　relationship　between　adsorption　heat　and　adsorption　amount　is　also　obtained.　The　value　of　adsorption　heat　is　no　longer　treated　as　the　constant　value　or　obtained　from　the　empirical　formula.　The　effects　of　velocity,　particle　size,　porosity　and　thermal　conductivity　of　particle　on　CO2　adsorption　in13X　zeolite　particle　bed　are　investigated.　The　results　show　that　the　saturation　adsorption　time　decreases　with　increased　velocity,　porosity　and　thermal　conductivity　of　particle,　while　increases　with　increased　particle　size.　The　peak　of　temperature　difference　between　the　solid　and　gas　phase　increases　with　increased　inlet　velocity,　porosity　and　particle　size,　while　decreases　with　thermal　conductivity　of　particle.　The　temperature　difference　trends　uniformity　and　the　peak　of　temperature　difference　moves　towards　to　the　outlet　of　adsorption　bed　with　adsorption　time　processing.　The　adsorption　bed　with　a　higher　inlet　velocity,　porosity　and　thermal　conductivity　of　particle,　and　smaller　particle　size　is　recommended　to　improve　the　adsorption　bed　performance.　Copyright　©　2018　ASME.